This question is incomplete, the complete question is;
Katie Ledecky swims the length of a 50m Olympic size pool in 25 seconds and swims the return trip to the starting position in 26 seconds. What are her average velocities during:
a) The first half of the swim?
b) The second half of the swim?
Answer:
a) her average velocities during the first half = 2 m/s
b) her average velocities during the second half = 1.923 m/s
Step-by-step explanation:
Given that;
displacement = 50 m
time taken t = 25 secs
a)
average velocity = displacement / time taken = 50 / 25 = 2 m/s
Therefore her average velocities during the first half = 2 m/s
b)
In the second half;
displacement = 50 m
time taken t = 26 secs
average velocity = displacement / time taken = 50 / 26 = 1.923 m/s
Therefore her average velocities during the second half = 1.923 m/s
12. Quadrilateral ABCD is located at A(-4,-2), B(0, -2), C(1, 2), and D(-3,2). What is
the most specific classification of ABCD?
PLEASE HELP ???
Answer:parallelogram
Step-by-step explanation:
reference angle for 39π/31
Answer:
i hoped i helped if i didnt sry
Step-by-step explanation:
Mrs. Smith bought 4 dozen doughnuts and paid a total of $13.92. What was the cost of 1 doughout
. A. $0.29
B. $3.48
C. $0.35
D. $1.16
Answer:
A $0.29
Step-by-step explanation:
4 dozen donuts is 48 donuts. (A dozen is 12 so 4 times 12 is 48). $13.92 divided by 48 is $0.29.
what is the complement of rolling a 3 on a die
Answer:
Part of a train timetable is shown.
Aberystwyth
Shrewsbury
Birmingham
08 30
10 17
12 30
14 19
13 55
16 05
17 20
a)
Bob catches the 12 30 train from Aberystwyth. He arrives in Shrewsbury 8 minutes late. What time does he arrive in Shrewsbury?
b) How long is Bob's journey from Aberystwyth to Shrewsbury? Give your answer in minutes.
minutes
11 30
15 30
Judy catches the 12 30 train from Aberystwyth.
She arrives in Shrewsbury on time.
She attends a job interview.
She gets back to Shrewsbury station 1 hour and 50 minutes later. Is she back in time to catch the 16 05 train to Birmingham?
You must show your working.
20 POINTS AND BRAINLIEST FOR CORRECT!!!!
3 1/3 OF 10
Answer:
33.333333333
Step-by-step explanation:
simply turn 3 1/3 into an improper fraction by multiplying the denominator by the coefficient and adding the numerator to get 10/3, which simplifies to 3.3333 and multiply it by 10 and you get 33.3333.
-b-2>8
Pls help me! I’m really confused
Answer:
b<−10
Step-by-step explanation:
Answer:
b<-10
Step-by-step explanation:
Inequality: -b-2>8
Step 1: Add 2 to both sides
-b-2+2>8+2
-b>10
Step 2: Divide both sides by -1
-b > 10
_ _
-1 -1
b<-10
Hope this helps you!!!!
Pi rational see pdf document attached
Answer:
[tex]\pi \\ \\ \\ \\ \\ \\ \\ \\ \\ [/tex]
If the equation of a line is 4x + 4y = 1 and equation of a second line is x + y = -8 which of the following is true
Answer:
Step-by-step explanation:
Two lines are perpendicular. The equation of the first line is y = 4x + 1. Which of the following cannot be the equation of the second line? A. y = -1/4x -2 B. x - 4y = -2 C. x + 4y = 2 D. 8y = -2x - 5
Do not round your answer. Type in just the number. 0.48 is what % of 1 .6
Answer:
0.00768
Step-by-step explanation:
Answer:
30%
Step-by-step explanation:
1.6÷100=0.016
1% - 0.016
0.48÷0.016=30
3. If A = 6x^2 - x^2 + 4x + 8 and B = 2x^3 + x - 5 then A - B equals
(1) 4x3 - x2 + 3x – 13
(2) 8x3 - x2 + 5x + 3
(3) 4x3 – x2 + 3x + 13
(4) 8x3 + 3x + 3
Hi there!
[tex]\large\boxed{(3) \text{ } 4x^{3} - x^{2} + 3x + 13}[/tex]
Given:
A = 6x³ - x² + 4x + 8
B = 2x³ + x - 5
Find A - B by subtracting the two equations. Subtract like-terms:
6x³ - x² + 4x + 8 - (2x³ + x - 5)
Simplify:
6x³ - x² + 4x + 8 - 2x³ - x + 5 =
4x³ - x² + 3x + 13. The correct choice is 3.
HELP The perimeter of a rectangle is 150 inches the lengh is 3 inches longer than 5times the width find the length
12 inches
if the length = x,
P = 150 inches
=2 { ( 5x + 3 ) + x }
=10x + 6 + 2x
=12x + 6
Therefore 12x + 6 = 150
12x = 150 - 6
12x = 144
x = 12
HELP PLEASE The 20% tip on a $8 sandwich
Answer:
$1.60
Step-by-step explanation:
So, to find the persent of a number, we need to make the percent a decimal.
So, 20% is equal to 0.2
Then, we need to multiply 0.2*8
8.0
* 0.2
________
1.6
So, our answer is 1 dollar and 60 cents!
Answer:
$1.60 (shorter answer)
Mrs. Smith has a total of 25 kids in her class. There are 3 more boys than there are girls. Write a system of equations to model this. Use b to represents the boys and g to represent the girls.
Answer:
b + g = 25
b = g + 3
Step-by-step explanation:
Let b = number of boys.
Let g = number of girls.
"Mrs. Smith has a total of 25 kids in her class."
b + g = 25
"There are 3 more boys than there are girls."
b = g + 3
The system of equations is:
b + g = 25
b = g + 3
A shirt is originally priced at $24.50 a shirt goes on sale for 30% off the original price how much money to the nearest cent does the shirt cost including 7% tax on the sale price
Answer:
7.86 is the answer
Step-by-step explanation:
30% of 24.50 is 7.35.
7.35+ 7% is 7.86
7.86 to the nearest cent is 7.86
A cow can be milked in 5 minutes, but it must be milked twice a day. If 6 cows can be milked at a time, how many cows can be milked in 10 minutes?
answer: 12
explanation:
you can milk 6 in five minutes so you multiple 6 by to because 10 is 5 two times
Pythagorean’s theorem
Step-by-step explanation:
Given
Hypotenuse (h) = 7
base (b) = 4
perpendicular (p) =?
Using Pythagoras theorem we get,
p = √h² - b²
= √7² - 4²
= √33
= 5.74
Hope it will help :)❤
p = a
a = 5.74 or u can write
a = √33
Answer:
5.74
Step-by-step explanation:
a=?
b=4
c=7
a^2=c^2-b^2
=7^2-4^2
=49-16
=33
a=√33
a=5.74
Locate and classify all the critical points of the function. (If an answer does not exist, enter DNE.)
f(x, y) = 2x² + 3y² + 4
Answer:
Step-by-step explanation:
f(x,y)=2x2+3y2−4x−1 ⇒ ∇f =⟨4x−4,6y⟩=⟨0,0⟩ ⇒ x=1, y = 0. Thus (1,0) is the only critical point of f, and it lies in the region x2+y2<16.Ontheboundary,g(x,y)=x2+y2=16 ⇒ λ∇g=⟨2λx,2λy⟩,so6y=2λy ⇒ eithery=0orλ=3. Ify=0,then x=±4;ifλ=3,then4x−4=2λx ⇒ x=−2andy=±2√3. Now f(1,0) = −3, f(4,0) = 15, f(−4,0) = 47, and f−2,±2√3 = 51. Thus the maximum value of f(x,y) on the disk x2+y2 ≤ 16 is f−2,±2√3 = 51, and the minimum value is f (1, 0) = −3.
please please please help PLEASEEEE!!!! 121OKCJE
A runner can run 3/5 of a mile in 4 minutes. If he runs at the same rate, how far will he run in an hour?
Answer:
9 miles
Step-by-step explanation:
4. Brett is fencing in a circular patio. The radius of the patio is 70 feet. How many linear feet of
fencing does he need to enclose the patio?
Answer:
The number of feet of fencing that he needs will be equal to the perimeter of the circular patio.
We know that the perimeter of a circle of radius R is equal to:
P = 2*pi*R
where pi = 3.14
Then if the radius of the patio is 70ft, the perimeter of the patio will be:
P = 2*3.14*70ft = 439.6 ft
Then he needs 439.6 ft of fencing to enclose the patio.
When is it appropriate to use the paired t test (involving the mean of the differences)? A. When two independent samples are compared. B. When two dependent samples are compared. C. When four samples are compared at once. D. When any two samples are compared.
Answer:
B. Two dependent samples are compared
Step-by-step explanation:
We use it when we are comparing Two dependent samples. The paired t-test can be likened to the repeated measures ANOVA test. Both of these two test are useful when comparing how a static group does in different test conditions.
But the difference between these two are:
We use the paired t-test if the explanatory variable has two levels.
While the Repeated measures ANOVA is used when the explanatory variable has greater than two levels.
multiply (-18)(-13) its for usatestprep
Answer:
Step-by-step explanation:
Here you go mate
Step 1
(-18)(-13) Equation/Question
Step 2
(-18)(-13) Multiply
234
Answer
234
What is the area of the figure below?
43 in
3 in
48 in 2
5 in.
68 in 2
1
88 in 2
5 in
3 in
3 in
7 in,
Answer:
68in
Step-by-step explanation:
I ready test
Answer: 68
Step-by-step explanation:
‘Multiply all of them and boom
6 in
4 in
4 in.
What is the surface area of the right square pyramid?
Answer:
48in
Step-by-step explanation:
6 x 4 x 4
96
divide it by 2
48
Answer:
48
Step-by-step explanation:
grhgbfjsbrvgjxbwifbcozbwicovbsnw
PLEASE HELP !! Select all the correct answers.
Janine needs to calculate the value of log12 81
Which expressions could she input into her calculator to find this value?
Answer: In 81/ In 12 AND log 81/log 12
Step-by-step explanation: PLATO ANSWER I got 100%
To solve the problem we must know about the change of base rule for Logarithm.
What is the change of base rule for Logarithm?The change of base rule for Logarithm helps us to change the base of any logarithmic expression to any other logarithmic expression.
[tex]log_ab = \dfrac{log_x b}{log_x a}[/tex]
where x is any base.
The expression can be expressed as [tex]\dfrac{log\ 81}{log\ 12}[/tex].
Given to us
[tex]log_{12}81[/tex]Change of base rule[tex]log_{12}81\\[/tex]
use the change of base rule, [tex]log_ab = \dfrac{log\ b}{log\ a}[/tex],
[tex]log_{12}81=\dfrac{log\ 81}{log\ 12}[/tex]
Hence, the expression can be expressed as [tex]\dfrac{log\ 81}{log\ 12}[/tex].
Learn more about Logarithm:
https://brainly.com/question/7302008
I will mark you brainliest
Answer:
[tex](15s)^6[/tex] is the same as [tex]15^6[/tex] × [tex]s^6[/tex]
The above statement can be proven by a rule related to exponents that states: [tex](ab)^c = a^c[/tex] × [tex]b^c[/tex][tex]3s^4[/tex] × [tex]5s^2[/tex] = [tex]15s^6[/tex]
(Work for the equation above ---> You would multiply the 3 and 5 together (3 x 5 = 15) and then multiply the s terms together [tex]s^4[/tex] x [tex]s^2[/tex] , and this can be done using the exponent rule --> [tex]a^b[/tex] x [tex]a^c[/tex] = [tex]a^{b+c}[/tex]. This means that [tex]s^4[/tex] x [tex]s^2 = s^{4+2} = s^6[/tex]) This results in [tex]15s^6[/tex][tex]15s^6 \neq 15^6[/tex] x [tex]s^6[/tex]
Hope this helps in any way!! :D
HELP ASAP-The girls’ soccer team won 80% of its games this season. They won 12 games. -The boys’ soccer team won 70% of its games this season. They won 14 games. How many games did each soccer team play this season?
Answer:
12 and 14
Step-by-step explanation:
15 - 20% = 12
20 - 30% = 14
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Builder’s Warehouse has a clearance on overstocked merchandise. A picnic table that usually sells for $167 is on sale for $149. What is the markdown?
167-149= The answer is 18
Find two ratios equivalent to the ratio in Exercise 1.
Answer:
12:26, 24:52 :D
What percent of 9 is 1
Whole number,fraction,or mixed number
9514 1404 393
Answer:
11 1/9%
Step-by-step explanation:
1/9 × 100% = (100/9)% = (11 1/9)%
Given the figure below, which of the following points name a line segment, a line, or a ray?
point B and point C
point A and point C
point D and point A
point E and point A
Answer:
Point a and point c
i dont know anything else
Answer:
a and c
Step-by-step explanation:
plz give me brainliest